Latest app won’t cast from iPhone app

The latest version of Play Music
Won’t cast to Chromecast or Chromecast Audio from the iPhone app. This is literally the only reason I made the switch from imusic subscription to play music so that I could cast from my phone to play specific audio selections to my whole house cast-able devices. Is an update coming to fix this anytime soon!?

bl8nt about Google Play Music, v3.38.1007